Water is absolutely vital to our survival! You can’t survive for very long without a drink of water!

That’s because we humans are made of so much of the stuff! 60 to 70 percent of our weight is water. It’s in every cell of the body…

Did you know? Blood is over 90% water! The brain, heart and muscles are 75% water. And even bones, which we think of as being dry, well – they’re 30% water.

But what does all that water actually do? Professor Hallux finds out…